121964815 has 8 divisors (see below), whose sum is σ = 167266080. Its totient is φ = 83632992.

The previous prime is 121964797. The next prime is 121964833. The reversal of 121964815 is 518469121.

It is an interprime number because it is at equal distance from previous prime (121964797) and next prime (121964833).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121964815 - 2⁹ = 121964303 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1742320 + ... + 1742389.

It is an arithmetic number, because the mean of its divisors is an integer number (20908260).

Almost surely, 2^121964815 is an apocalyptic number.

121964815 is a deficient number, since it is larger than the sum of its proper divisors (45301265).

121964815 is an equidigital number, since it uses as much as digits as its factorization.

121964815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3484721.

The product of its digits is 17280, while the sum is 37.

The square root of 121964815 is about 11043.7681522205. The cubic root of 121964815 is about 495.9198825135.

The spelling of 121964815 in words is "one hundred twenty-one million, nine hundred sixty-four thousand, eight hundred fifteen".